Secondly, the "give the best shot" indicates a pre-determined plan. There wasn't
Thirdly the Kanpur (or Cawnpore) massacre is as Sherman points out, chaotic and hardly planned
As Sherman points out correctly Horrible atrocities were indeed committed by both sides, though the number of Indians murdered by the Brits is probably a large multiple (20x, 50x, 100x, who knows?) of the Brits murdered by Indians. This is largely because there just weren't that many Brits in India at the time, while there were lots and lots of Indians available for slaughter.
The point is that while these atrocities happened, the true nature of events bears little semblance to this definition of a "Perfect Day."
Sherman, I would also state that the ignorance of the article's author is because many people think of India as one country while it isn't -- the people of Punjab and of Madras as different nations, different races and their languages are as similar as Italian and Japanese
The "Indian Mutiny" was really just the "Gangetic north Indian mutiny" and even then it was mainly brought on by the erstwhile rulers trying to get back their power to collect more money
The common people saw the British as just another tax collector, no better, no worse
And for Tamils, Sikhs etc., the British were better than the Moslem rulers or the Marathas (to some extent)
That's why I cited Huế, In that case it was deliberate, planed, and co-ordinated The result? Everyone with a history of cooperating with the Americans and every member of the government and every member of their families were murdered in a single night.
The Sepoy revolt isn't a piece of malicious software that can only be robotically followed to inevitable failure, it, like all other military actions, is a learning experience.
The kid fell off the bicycle in 1857, I think he can give riding it a very good go today.